Nissan Juke F15. Manual - part 544

 

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Nissan Juke F15. Manual - part 544

 

 

P0448 EVAP CANISTER VENT CONTROL VALVE

EC-989

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

C

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P0448 EVAP CANISTER VENT CONTROL VALVE

DTC Logic

INFOID:0000000012198482

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn ignition switch ON and wait at least 5 seconds.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT.

4. Start engine and let it idle for at least 1 minute. 

5. Repeat next procedures 3 times.

-

Increase the engine speed up to 3,000 to 3,500 rpm and keep it for 2 minutes and 50 seconds to 3 min-

utes.

Never exceed 3 minutes.

-

Fully released accelerator pedal and keep engine idle for about 5 seconds.

6. Repeat next procedure 20 times.

-

Quickly increase the engine speed up to 4,000 to 4,500 rpm or more and keep it for 25 to 30 seconds.

-

Fully released accelerator pedal and keep engine idle for at least 35 seconds.

7. Repeat the step 1 to 5 three times.

NOTE:

Before starting another cycle, relief the fuel tank negative pressure with removing and refitting the fuel

filler cap.

8. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-990, "Diagnosis Procedure"

.

NO

>> INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0448

VENT CONTROL VALVE
(Evaporative emission system 
vent control circuit shorted)

EVAP canister vent control valve remains 
closed under specified driving conditions.

• EVAP canister vent control valve
• EVAP control system pressure sensor 

and the circuit

• Blocked rubber tube to EVAP canister 

vent control valve

• EVAP canister is saturated with water

PBIB0972E

EC-990

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

P0448 EVAP CANISTER VENT CONTROL VALVE

Diagnosis Procedure

INFOID:0000000012198483

1.

CHECK RUBBER TUBE

1. Turn ignition switch OFF.

2. Disconnect rubber tube connected to EVAP canister vent control valve.

3. Check the rubber tube for clogging.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Clean rubber tube using an air blower.

2.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check EVAP canister vent control valve. Refer to 

EC-991, "Component Inspection"

.

Is he inspection result normal?

YES

>> GO TO 3.

NO

>> Replace EVAP canister vent control valve. Refer to 

FL-27, "2WD : Removal and Installa-

tion"

(2WD) or 

FL-30, "AWD : Removal and Installation"

(AWD).

3.

CHECK IF EVAP CANISTER SATURATED WITH WATER

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor

attached. Refer to 

FL-27, "2WD : Removal and Installation"

(2WD) or 

FL-30, "AWD : Removal and Installa-

tion"

(AWD).

2. Check if water will drain from the EVAP canister.
Does water drain from the EVAP canister?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor

attached.

The weight should be less than 1.9 kg (4.2 lb).
Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.

• EVAP canister for damage

• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister. Refer to 

FL-27, "2WD : Removal and Installation"

(2WD) or

FL-30, "AWD : Removal and Installation"

(AWD).

6.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector.

2. Check that water is not inside connectors.
Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-27, "2WD : Removal and Installa-

tion"

(2WD) or 

FL-30, "AWD : Removal and Installation"

(AWD).

JMBIA1134GB

P0448 EVAP CANISTER VENT CONTROL VALVE

EC-991

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

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7.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Check EVAP control system pressure sensor. Refer to 

EC-1004, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-27, "2WD : Removal and Installa-

tion"

(2WD) or 

FL-30, "AWD : Removal and Installation"

(AWD).

Component Inspection

INFOID:0000000012198484

1.

CHECK EVAP CANISTER VENT CONTROL VALVE-I

1. Remove EVAP canister vent control valve from EVAP canister. Refer to 

FL-27, "2WD : Removal and

Installation"

(2WD) or 

FL-30, "AWD : Removal and Installation"

(AWD).

2. Check portion   of EVAP canister vent control valve for rust.
Is it rusted?

YES

>> Replace EVAP canister vent control valve. Refer to 

FL-

27, "2WD : Removal and Installation"

(2WD) or 

FL-30,

"AWD : Removal and Installation"

(AWD).

NO

>> GO TO 2.

2.

CHECK EVAP CANISTER VENT CONTROL VALVE-II

With CONSULT

1. Reconnect harness connectors disconnected.

2. Turn ignition switch ON.

3. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.

4. Check air passage continuity and operation delay time.

Check that new O-ring is installed properly.

Operation takes less than 1 second.

Without CONSULT

1. Disconnect EVAP canister vent control valve harness connector.

2. Check air passage continuity and operation delay time under the

following conditions.

Check that new O-ring is installed properly.

Operation takes less than 1 second.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK EVAP CANISTER VENT CONTROL VALVE-III

With CONSULT

1. Clean the air passage [portion   to  ] of EVAP canister vent control valve using an air blower.

JMBIA0168ZZ

Condition VENT CONTROL/V

Air passage continuity between 

 and 

ON

Not existed

OFF

Existed

Condition

Air passage continuity between 

 and 

12 V direct current supply between
 terminals 1 and 2

Not existed

OFF

Existed

JMBIA0169ZZ

EC-992

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

P0448 EVAP CANISTER VENT CONTROL VALVE

2. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.

3. Check air passage continuity and operation delay time.

Check that new O-ring is installed properly.

Operation takes less than 1 second.

Without CONSULT

1. Clean the air passage [portion   to  ] of EVAP canister vent

control valve using an air blower.

2. Check air passage continuity and operation delay time under the following conditions.

Check that new O-ring is installed properly.

Operation takes less than 1 second.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP canister vent control valve. Refer to 

FL-27, "2WD : Removal and Installa-

tion"

(2WD) or 

FL-30, "AWD : Removal and Installation"

(AWD).

Condition VENT CONTROL/V

Air passage continuity between 

 and 

ON

No

OFF

Yes

Condition

Air passage continuity between 

 and 

12 V direct current supply between
 terminals (1) and (2)

No

OFF

Yes

JMBIA0169ZZ

 

 

 

 

 

 

 

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